MalwarePublished 2 Nov 2026

@bigdevin55/calculator-install-demo (npm) · Malicious Code

Affects @bigdevin55/calculator-install-demoSource GCVE Database

Malicious package : remove @bigdevin55/calculator-install-demo and rotate any secrets on hosts that installed it.

Data as of 2 Nov 2026, 17:32 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-18465

What to do

Remove @bigdevin55/calculator-install-demo from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npm@bigdevin55/calculator-install-demo	Affected–	Fixed in–

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Description

The npm package @bigdevin55/calculator-install-demo contains malicious code that can fully compromise any computer on which it is installed or executed. The compromise may allow an attacker to gain full control over the affected system, risking exposure of all stored secrets and keys. Immediate removal of the package and rotation of all secrets from a different, uncompromised device is strongly advised.

Impact

Full system compromise on any computer with the package installed or running. All secrets and keys stored on the compromised computer are at risk and should be rotated immediately from a secure, unaffected device. Removal of the package alone does not guarantee elimination of all malicious software introduced by the package.

Defensive guidance

Remove the @bigdevin55/calculator-install-demo package immediately from all affected systems. Rotate all secrets and keys stored on compromised computers using a different, secure device. Due to the possibility of persistent malicious software beyond the package itself, consider performing a full system audit and remediation to ensure complete removal of the threat.

Summary

The npm package @bigdevin55/calculator-install-demo has been identified as containing malicious code. Installation or execution of this package results in a full system compromise, potentially allowing an attacker to control the affected computer and access sensitive data such as secrets and keys. Due to the severity of the compromise, simply removing the package may not eliminate all malicious components introduced. The threat is classified as malware based on source data from the GHSA malware database.

References

github.com/advisories/GHSA-fr4c-gqv9-5rgx (opens in a new tab)

Community reviews

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What to do

Affected software

Description

AI analysisMachine-generated, updated 2 Nov 2026, 17:32 UTC

Technical details

References

Community reviews